TORICH INTERNATIONAL LIMITED
TORICH INTERNATIONAL LIMITED The Steel Tube Maker
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The GB/T 34204 standard specifies the requirements for seamless low carbon alloy steel tubes used in coiled tubing applications in the petroleum industry. These tubes are designed to withstand high pressures and temperatures, making them suitable for various oil and gas extraction processes.
The standard outlines the specifications for different grades of coiled tubing, including CT55, CT60, CT70, CT80, and CT90. Each grade has specific mechanical properties and chemical compositions tailored for various operational requirements.
The chemical composition of the low carbon alloy steel tubes is critical for ensuring their performance in demanding environments. Below is a table summarizing the chemical composition for each grade:
| Grade | C (%) | Mn (%) | P (%) | S (%) | Cr (%) | Ni (%) | Mo (%) |
|---|---|---|---|---|---|---|---|
| CT55 | 0.10 | 0.30-0.60 | ≤0.020 | ≤0.010 | 0.50-1.00 | ≤0.50 | ≤0.10 |
| CT60 | 0.10 | 0.30-0.60 | ≤0.020 | ≤0.010 | 0.50-1.00 | ≤0.50 | ≤0.10 |
| CT70 | 0.10 | 0.30-0.60 | ≤0.020 | ≤0.010 | 0.50-1.00 | ≤0.50 | ≤0.10 |
| CT80 | 0.10 | 0.30-0.60 | ≤0.020 | ≤0.010 | 0.50-1.00 | ≤0.50 | ≤0.10 |
| CT90 | 0.10 | 0.30-0.60 | ≤0.020 | ≤0.010 | 0.50-1.00 | ≤0.50 | ≤0.10 |
The mechanical properties of the coiled tubing are essential for ensuring their durability and performance under operational conditions. The following table presents the mechanical properties for each grade:
| Grade | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation (%) | Hardness (HB) |
|---|---|---|---|---|
| CT55 | ≥ 380 | 450-550 | ≥ 20 | ≤ 200 |
| CT60 | ≥ 450 | 500-600 | ≥ 18 | ≤ 210 |
| CT70 | ≥ 500 | 550-650 | ≥ 16 | ≤ 220 |
| CT80 | ≥ 550 | 600-700 | ≥ 14 | ≤ 230 |
| CT90 | ≥ 600 | 650-750 | ≥ 12 | ≤ 240 |
The seamless low carbon alloy steel tubes specified in GB/T 34204 are primarily used in the petroleum industry for various applications, including:
Haiyan Sanxin Steel Pipe Factory is a leading manufacturer of steel pipes in China. Located in a region with excellent geographical advantages, the factory is situated close to the Zhoushan Port and Ningbo Port.
Our factory covers an area of more than 25,000 square meters and has been in the steel pipe manufacturing business for 20 years. Over this period, we have accumulated a wealth of professional experience, which has helped us establish ourselves as a trusted name in the industry.
At our factory, we specialize in the production of various types of steel pipes, including stainless steel pipe, carbon steel pipe, copper pipe, steel pipe,seamless steel pipe and welded pipe. Our expertise in this field is evident from the 12 patents that we hold, which demonstrate our commitment to innovation and excellence.
A: manufacturer,also can do trading.
A: Generally speaking,it is 10-15 days if the goods are in stock,or it is 30-40 days if the goods are not in stock, it is according to quantity.
A: Yes, we could offer the sample for free charge but need pay the cost of freight.
A: Payment<=2000USD, 100% in advance. Payment>=2000USD, 30% T/T in advance ,balance before shippment.
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